Loose Leaf for Fundamentals of Electric Circuits Format: LooseLeaf
6th Edition
ISBN: 9781259657054
Author: Alexander
Publisher: Mcgraw Hill Publishers
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Chapter 17, Problem 73P
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Find the average power absorbed by the resistor.
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1. An AM standard broadcast station has a Lower sideband and an upper side band frequency of 770KHz and 780KHz, respectively. If the AM station is transmitting a frequency of 775KHz,
calculate the: a. Total bandwidth occupied by the AM station.
An FM signal , 2000 sin(2π x 108t + 2sin πx 104t), is applied to a 50 ohms antenna. Determine:
(a) The intelligence signal frequency.
(b) The bandwidth (using the two methods)
(c) The power in the largest and smallest side bands.
An FM signal is represented by the equation v(t) = 12 sin (6.28x108t + 8 sin 1450t). Determine the unmodulated carrier frequency, the modulating frequency and the modulation index
Chapter 17 Solutions
Loose Leaf for Fundamentals of Electric Circuits Format: LooseLeaf
Ch. 17.2 - Find the Fourier series of the square wave in Fig....Ch. 17.2 - Determine the Fourier series of the sawtooth...Ch. 17.3 - Prob. 3PPCh. 17.3 - Find the Fourier series expansion of the function...Ch. 17.3 - Prob. 5PPCh. 17.4 - Prob. 6PPCh. 17.4 - If the input voltage in the circuit of Fig. 17.24...Ch. 17.5 - The voltage and current at the terminals of a...Ch. 17.5 - Find the rms value of the periodic current i(t) =...Ch. 17.6 - Obtain the complex Fourier series of the function...
Ch. 17.6 - Obtain the complex Fourier series expansion of...Ch. 17.7 - Prob. 12PPCh. 17.8 - Rework Example 17.14 if the low-pass filter is...Ch. 17 - Which of the following cannot be a Fourier series?...Ch. 17 - If ft=t,0t,ft+n=ft, the value of 0 is (a) 1 (b) 2...Ch. 17 - Which of the following are even functions? (a) t +...Ch. 17 - Prob. 4RQCh. 17 - Prob. 5RQCh. 17 - If f(t) = 10 + 8 cos t + 4 cos 3t + 2 cos 5t + ,...Ch. 17 - Prob. 7RQCh. 17 - The plot of |cn| versus n0 is called: (a) complex...Ch. 17 - Prob. 9RQCh. 17 - Prob. 10RQCh. 17 - Evaluate each of the following functions and see...Ch. 17 - Using MATLAB, synthesize the periodic waveform for...Ch. 17 - Given that Fourier coefficients a0, an, and bn of...Ch. 17 - Find the Fourier series expansion of the backward...Ch. 17 - Prob. 5PCh. 17 - Find the trigonometric Fourier series for f t =...Ch. 17 - Determine the Fourier series of the periodic...Ch. 17 - Using Fig. 17.51, design a problem to help other...Ch. 17 - Determine the Fourier coefficients an and bn of...Ch. 17 - Find the exponential Fourier series for the...Ch. 17 - Obtain the exponential Fourier series for the...Ch. 17 - Prob. 12PCh. 17 - Prob. 13PCh. 17 - Find the quadrature (cosine and sine) form of the...Ch. 17 - Express the Fourier series...Ch. 17 - The waveform in Fig. 17.55(a) has the following...Ch. 17 - Prob. 17PCh. 17 - Prob. 18PCh. 17 - Obtain the Fourier series for the periodic...Ch. 17 - Prob. 20PCh. 17 - Prob. 21PCh. 17 - Calculate the Fourier coefficients for the...Ch. 17 - Using Fig. 17.61, design a problem to help other...Ch. 17 - Prob. 24PCh. 17 - Determine the Fourier series representation of the...Ch. 17 - Find the Fourier series representation of the...Ch. 17 - For the waveform shown in Fig. 17.65 below, (a)...Ch. 17 - Obtain the trigonometric Fourier series for the...Ch. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - Prob. 34PCh. 17 - Prob. 35PCh. 17 - Prob. 36PCh. 17 - If the periodic current waveform in Fig. 17.73(a)...Ch. 17 - Prob. 38PCh. 17 - Prob. 39PCh. 17 - The full-wave rectified sinusoidal voltage in Fig....Ch. 17 - Prob. 42PCh. 17 - The voltage across the terminals of a circuit is...Ch. 17 - Prob. 44PCh. 17 - A series RLC circuit has R = 10 , L = 2 mH, and C...Ch. 17 - Prob. 46PCh. 17 - Prob. 47PCh. 17 - Prob. 48PCh. 17 - Prob. 49PCh. 17 - Prob. 50PCh. 17 - Prob. 51PCh. 17 - Prob. 52PCh. 17 - Prob. 53PCh. 17 - Find the exponential Fourier series for the...Ch. 17 - Obtain the exponential Fourier series expansion of...Ch. 17 - The Fourier series trigonometric representation of...Ch. 17 - Prob. 57PCh. 17 - Find the exponential Fourier series of a function...Ch. 17 - Prob. 59PCh. 17 - Obtain the complex Fourier coefficients of the...Ch. 17 - The spectra of the Fourier series of a function...Ch. 17 - Prob. 62PCh. 17 - Plot the amplitude spectrum for the signal f2(t)...Ch. 17 - Prob. 64PCh. 17 - Prob. 65PCh. 17 - Prob. 66PCh. 17 - Prob. 67PCh. 17 - Prob. 68PCh. 17 - Prob. 69PCh. 17 - Design a problem to help other students better...Ch. 17 - Prob. 71PCh. 17 - Prob. 72PCh. 17 - Prob. 73PCh. 17 - Prob. 74PCh. 17 - Prob. 75PCh. 17 - Prob. 76PCh. 17 - Prob. 77CPCh. 17 - Prob. 78CPCh. 17 - Consider the full-wave rectified sinusoidal...Ch. 17 - Prob. 82CP
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- WHAT IS THE BANDWIDTH OF AN AM SIGNAL WHOSE CARRIER IS MODULATED BY 1KHZ 3KHZ AND 5KHZ SIMULTANEOUSLYarrow_forwardA.) An FM signal , 2000 sin(2π x 108t + 2sin πx 104t), is applied to a 50 ohms antenna. Determine: (a) The carrier frequency. (b) The transmitter power. (c) The modulating index. (d) The intelligence signal frequency. (e) The bandwidth (using the two methods) (f) The power in the largest and smallest side bands.arrow_forwardGiven the AM wave equation: eAM = 60 sin 200,000πt + 7.5 cos 197,000πt – 7.5 cos 203,000πt, calculate the modulation index, percent modulation, amplitude of the modulating signal and the frequency of the carrier and modulating signal.arrow_forward
- If the received power at a receiver is -77 dBm and an antenna at the receiver is installed that doubles the received power, what is the new received power in dBm? Show your computations and/or explain your answerarrow_forwardAn FM transmitter is determined to have a transmitter sensitivity of 287.874Hz/V. If the modulating signal is designed to be 20.232V, determine the frequency iof this modulating signal if the modulation index is kept to be at 1.arrow_forwardAn FM transmitter is determined to have a transmitter sensitivity of 410.348Hz/V. If the modulating signal is designed to be 27.397V, and the modulation index is kept to be at 2.5, solve for the total bandwidth according to carson's rule.arrow_forward
- Find the quality factor of an antenna if it has a bandwidth of 600 kHz and is cut to a frequency of 30 MHz.arrow_forwardAn AM signal has the following characteristics: fc = 150 MHz, fm =3 kHz , Vc = 50 V , Vm = 40 V For this signal, find: (a) the modulation index (b) the bandwidth (c) the peak voltage of the upper sideband (d) Draw the AM waveformarrow_forwardWhat is the power in one of the sideband of an AM signal whose carrier power is 350W with 80% modulation.arrow_forward
- Find the deviation ratio of an FM broadcast transmitter if the frequency of the modulating signal varies from 30 Hz to 20 kHz.arrow_forwardYou have a broadcasting station on the frequency of 107.3 MHz and radiate with a power of 230 KWatt with a 3 dBi antenna, if we have a receiver 50 km away with a receiving power of -112.28 dBm. What will be the power gain expressed in decibels of the receiving antenna.arrow_forwardAn FM signal is described by s(t) = 100cos(2pi * 10 ^ 6 * t + 0.02sin(1000pi * t)) (a) Determine the instantaneous frequency f j (t);(b) Determine the frequency deviation 4 and the modulation index beta / (0) What is the approximate bandwidth of x(t) ; (d) In this a narrowband or wideband FM signal? Why?arrow_forward
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